Results 11 to 20 of about 542,179 (285)
NUMERICAL CALCULATION WITH ARBITRARY PRECISION [PDF]
International Journal of Modern Physics E, 2007 The vast use of computers on scientific numerical computation makes the awareness of the limited precision that these machines are able to provide us an essential matter. A limited and insufficient precision allied to the truncation and rounding errors may induce the user to incorrect interpretation of his or her answer.
B. O. Rodrigues +2 more
openaire +2 more sources
Precise head segmentation on arbitrary backgrounds [PDF]
2009 16th IEEE International Conference on Image Processing (ICIP), 2009 We propose a method for segmentation of frontal human portraits from arbitrary unknown backgrounds. Semantic information is used to project the face into a normalized reference frame. A shape model learned from a set of manually segmented faces is used to compute a rough initial segmentation using a fast iterative algorithm. The rough initial cutout is
David C. Schneider +2 more
openaire +1 more source
Arbitrary precision arithmetic-SIMD style [PDF]
Proceedings Eleventh International Conference on VLSI Design, 2002 Current day general purpose processors have been enhanced with what is called "media instruction set" to achieve performance gains in applications that are media processing intensive. The instruction set that has been added exploits the fact that media applications have small native datatypes and have widths much less than that supported by commercial ...
Balakrishnan, S, Nandy, SK
openaire +2 more sources
Correctly Rounded Multiplication by Arbitrary Precision Constants [PDF]
17th IEEE Symposium on Computer Arithmetic (ARITH'05), 2005 Nous proposons un algorithme permettant de multiplier un nombre virgule flottante x par une constante C qui n’est pas exactement représentable en virgule flottante.Notre algorithme nécessite la disponibilité d’une instruction “multiplication-accumulation”. Nous donnons des méthodes pour tester si,pour une constante C et un format virgule flottante donnés,
Muller, Jean-Michel, Brisebarre, Nicolas
openaire +3 more sources
Arbitrary-precision computation of the gamma function
Maple Transactions, 2023 We discuss the best methods available for computing the gamma function Γ(z) in arbitrary-precision arithmetic with rigorous error bounds. We address different cases: rational, algebraic, real or complex arguments; large or small arguments; low or high precision; with or without precomputation. The methods also cover the log-gamma function log Γ(z), the
openaire +3 more sources
New Journal of Physics, 2021 Unambiguous determination of the electric field of arbitrary ultrashort pulses is the key for time and frequency standards, attosecond science, and precision spectroscopy. However, a single-step technique that can simultaneously and directly characterize
Billy Lam, Chunlei Guo
doaj +1 more source
Remote Sensing, 2021 Due to its great application value in the military and civilian fields, ship detection in synthetic aperture radar (SAR) images has always attracted much attention.
Zhongzhen Sun +5 more
doaj +1 more source
Precision thermometry and the quantum speed limit [PDF]
, 2018 We assess precision thermometry for an arbitrary single quantum system. For a $d$-dimensional harmonic system we show that the gap sets a single temperature that can be optimally estimated.
Campbell, Steve +2 more
core +2 more sources
HELAC: a package to compute electroweak helicity amplitudes [PDF]
, 2000 HELAC is a FORTRAN based package that is able to compute efficiently helicity amplitudes for arbitrary scattering processes within the standard electroweak theory.
Kanaki, Aggeliki +1 more
core +2 more sources
Fast Arbitrary Precision Floating Point on FPGA
2022 IEEE 30th Annual International Symposium on Field-Programmable Custom Computing Machines (FCCM), 2022 Numerical codes that require arbitrary precision floating point (APFP) numbers for their core computation are dominated by elementary arithmetic operations due to the super-linear complexity of multiplication in the number of mantissa bits. APFP computations on conventional software-based architectures are made exceedingly expensive by the lack of ...
Johannes de Fine Licht +4 more
openaire +4 more sources